/* ========================================
   素觅文旅建站 - 首页专属样式
   阶梯式高低错位布局
   ======================================== */

/* Hero Section - 全屏 Banner */
.hero-section {
    position: relative;
    height: 100vh;
    min-height: 700px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: linear-gradient(135deg, var(--ink-black) 0%, var(--cement-dark) 100%);
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.3;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(ellipse at center, transparent 0%, rgba(26,26,26,0.8) 100%);
}

.hero-content {
    position: relative;
    z-index: 3;
    text-align: center;
    max-width: 900px;
    padding: 0 40px;
}

.hero-title {
    font-size: 4rem;
    font-weight: 700;
    color: var(--warm-white);
    letter-spacing: 15px;
    text-transform: uppercase;
    margin-bottom: 30px;
    line-height: 1.2;
    text-shadow: 0 4px 20px rgba(0,0,0,0.5);
}

.hero-subtitle {
    font-size: 1.3rem;
    color: var(--metal-silver);
    letter-spacing: 5px;
    margin-bottom: 50px;
    line-height: 2;
}

.hero-cta {
    display: flex;
    gap: 25px;
    justify-content: center;
    flex-wrap: wrap;
}

/* 阶梯式服务区块 */
.services-staggered {
    padding: 150px 0 100px;
    background: var(--cement-dark);
    position: relative;
}

.services-staggered::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--brick-red) 0%, var(--cement-light) 50%, var(--brick-red) 100%);
}

.stagger-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    position: relative;
}

.stagger-item {
    padding: 50px 35px;
    background: var(--cement-medium);
    border: 1px solid var(--cement-light);
    position: relative;
    transition: all 0.5s ease;
}

.stagger-item:nth-child(2) {
    transform: translateY(60px);
}

.stagger-item:nth-child(3) {
    transform: translateY(0);
}

.stagger-item:nth-child(4) {
    transform: translateY(0);
}

.stagger-item:nth-child(5) {
    transform: translateY(60px);
}

.stagger-item:nth-child(6) {
    transform: translateY(0);
}

.stagger-item:hover {
    transform: translateY(-10px) !important;
}

.stagger-icon {
    width: 70px;
    height: 70px;
    margin-bottom: 25px;
    object-fit: cover;
    border: 2px solid var(--brick-red);
    border-radius: 3px;
}

.stagger-title {
    font-size: 1.4rem;
    color: var(--warm-white);
    margin-bottom: 15px;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.stagger-text {
    color: var(--metal-silver);
    line-height: 1.9;
    font-size: 0.95rem;
}

/* 特色展示区 - 左右错位 */
.feature-split {
    padding: 120px 0;
    background: var(--ink-black);
}

.split-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
    margin-bottom: 120px;
}

.split-row:last-child {
    margin-bottom: 0;
}

.split-row.reverse {
    direction: rtl;
}

.split-row.reverse .split-content {
    direction: ltr;
}

.split-row.reverse .split-image {
    direction: ltr;
}

.split-image {
    position: relative;
    overflow: hidden;
    border: 3px solid var(--brick-red);
}

.split-image img {
    width: 100%;
    height: 450px;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.split-image:hover img {
    transform: scale(1.05);
}

.split-content {
    padding: 40px 0;
}

.split-heading {
    font-size: 2.2rem;
    color: var(--warm-white);
    margin-bottom: 25px;
    letter-spacing: 4px;
    text-transform: uppercase;
    position: relative;
    display: inline-block;
}

.split-heading::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 60px;
    height: 3px;
    background: var(--brick-red);
}

.split-description {
    color: var(--metal-silver);
    line-height: 2.1;
    font-size: 1.05rem;
    margin-bottom: 35px;
}

.split-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-bottom: 35px;
}

.split-feature {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--warm-white);
    font-size: 0.95rem;
}

.feature-check {
    color: var(--brick-red);
    font-size: 1.2rem;
}

/* 案例展示 - 瀑布流错位 */
.cases-showcase {
    padding: 150px 0;
    background: var(--cement-dark);
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-auto-flow: dense;
    gap: 25px;
}

.case-card {
    position: relative;
    overflow: hidden;
    border: 2px solid var(--cement-light);
    transition: all 0.5s ease;
}

.case-card.large {
    grid-column: span 2;
    grid-row: span 2;
}

.case-card.tall {
    grid-row: span 2;
}

.case-card.wide {
    grid-column: span 2;
}

.case-image {
    width: 100%;
    height: 280px;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.case-card:hover .case-image {
    transform: scale(1.1);
}

.case-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 30px 25px;
    background: linear-gradient(transparent, rgba(26,26,26,0.95));
    transform: translateY(20px);
    opacity: 0;
    transition: all 0.4s ease;
}

.case-card:hover .case-overlay {
    transform: translateY(0);
    opacity: 1;
}

.case-category {
    color: var(--brick-red);
    font-size: 0.8rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 8px;
}

.case-title {
    color: var(--warm-white);
    font-size: 1.2rem;
    margin-bottom: 10px;
    letter-spacing: 1px;
}

.case-meta {
    color: var(--metal-silver);
    font-size: 0.85rem;
}

/* 首页资讯列表 - 四栏布局 */
.news-section {
    padding: 120px 0;
    background: var(--ink-black);
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.news-card {
    background: var(--cement-medium);
    border: 1px solid var(--cement-light);
    overflow: hidden;
    transition: all 0.4s ease;
}

.news-card:hover {
    border-color: var(--brick-red);
    transform: translateY(-5px);
}

.news-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-bottom: 2px solid var(--brick-red);
}

.news-content {
    padding: 25px;
}

.news-date {
    color: var(--brick-red);
    font-size: 0.85rem;
    letter-spacing: 1px;
    margin-bottom: 12px;
}

.news-title {
    color: var(--warm-white);
    font-size: 1.1rem;
    margin-bottom: 12px;
    line-height: 1.6;
    letter-spacing: 1px;
}

.news-excerpt {
    color: var(--metal-silver);
    font-size: 0.9rem;
    line-height: 1.8;
    margin-bottom: 20px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-link {
    color: var(--brick-red);
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.news-link::after {
    content: '→';
    transition: transform 0.3s ease;
}

.news-link:hover::after {
    transform: translateX(5px);
}

/* CTA 区块 */
.cta-section {
    padding: 120px 0;
    background: linear-gradient(135deg, var(--brick-red) 0%, var(--rust-orange) 100%);
    text-align: center;
}

.cta-heading {
    font-size: 2.8rem;
    color: var(--warm-white);
    margin-bottom: 20px;
    letter-spacing: 5px;
    text-transform: uppercase;
}

.cta-text {
    font-size: 1.2rem;
    color: var(--aged-paper);
    margin-bottom: 40px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.cta-buttons {
    display: flex;
    gap: 25px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn-light {
    background: var(--warm-white);
    color: var(--brick-red);
    border-color: var(--warm-white);
}

.btn-light::before {
    background: var(--ink-black);
}

.btn-light:hover {
    color: var(--ink-black);
}

/* 响应式调整 */
@media (max-width: 1200px) {
    .hero-title {
        font-size: 3rem;
        letter-spacing: 10px;
    }
    
    .stagger-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .stagger-item:nth-child(2),
    .stagger-item:nth-child(3),
    .stagger-item:nth-child(4),
    .stagger-item:nth-child(5),
    .stagger-item:nth-child(6) {
        transform: translateY(0);
    }
    
    .cases-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .news-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 992px) {
    .split-row {
        grid-template-columns: 1fr;
        gap: 50px;
    }
    
    .split-row.reverse {
        direction: ltr;
    }
    
    .split-image img {
        height: 350px;
    }
    
    .cases-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .case-card.large,
    .case-card.wide {
        grid-column: span 1;
    }
    
    .case-card.tall {
        grid-row: span 1;
    }
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 2rem;
        letter-spacing: 5px;
    }
    
    .hero-subtitle {
        font-size: 1rem;
        letter-spacing: 2px;
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }
    
    .stagger-grid {
        grid-template-columns: 1fr;
    }
    
    .split-features {
        grid-template-columns: 1fr;
    }
    
    .cases-grid {
        grid-template-columns: 1fr;
    }
    
    .news-grid {
        grid-template-columns: 1fr;
    }
    
    .cta-heading {
        font-size: 2rem;
    }
}